Electronic Seal Terminal Segmentation for Tamper Detection
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Solution Overview
Problem
Conventional electronic seals lack sensitivity in monitoring the integrity of sealed cargo, as they can be easily tampered with or fail to send warning signals when the seal is severed, particularly when designed with only two terminals.
Innovation Solution
An electronic seal with a shell and bolt configuration, featuring a circuit board with at least three terminals and a conducting rod portion, which changes conducting states to send warning signals upon movement, and includes additional components like a memory unit, processor, and radio frequency chip for enhanced security and remote monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional electronic seals use only two terminals, then the device complexity is reduced, but the measurement precision and reliability of integrity monitoring deteriorates
Solution Approach 1:
The seal is divided into multiple independent terminals (at least three terminals) that can be individually contacted by the bolt. This segmentation allows the system to detect different states of the seal integrity through different terminal combinations, improving reliability without significantly increasing overall complexity
Solution Approach 2:
The patent changes the electrical parameter configuration by using multiple terminals with different contact states. The bolt can contact different combinations of terminals to create different conducting states, allowing the control circuit to distinguish between various integrity states of the seal
2Ease of manufacture
If conventional electronic seals use simple circuit design, then the ease of manufacture is improved, but the measurement precision of seal integrity deteriorates
Solution Approach 1:
The control circuit continuously monitors the conducting state formed by the bolt contacting different terminals and provides feedback signals to indicate the integrity state of the seal. This feedback mechanism enables precise detection of seal integrity while maintaining relatively simple circuit design
Solution Approach 2:
The patent replaces complex mechanical sensing mechanisms with an electrical conducting state detection system. The bolt's physical position is converted into electrical signals through terminal contacts, allowing precise integrity measurement through electrical rather than mechanical means
3Device complexity
If conventional electronic seals lack sensitive monitoring capability, then the device complexity is reduced, but the detection capability of tampering deteriorates
Solution Approach 1:
The system dynamically changes the conducting state by having the bolt contact different terminals at different positions. This dynamic state change allows the control circuit to detect even small movements or tampering attempts, improving detection capability without requiring overly complex monitoring systems
Solution Approach 2:
The bolt acts as an intermediary element that translates physical seal state into electrical conducting states. By using the bolt as a mediator between the mechanical seal and the electrical detection circuit, the system achieves sensitive tampering detection through a relatively simple intermediate mechanism
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides sensitive monitoring and secure integrity verification, preventing tampering and allowing remote management of cargo seals, with varied conducting states and wireless communication for alerting users to any breaches.
Implementation Method 1
The rod portion is inserted into the passage so that the conducting surface is in contact with the terminals to define a conducting state. The conducting state varies as the rod portion sliding with respect to the passage
Data Source
AI summary
An electronic seal of the present invention includes a bolt. The bolt is used to mount on a door latch of a cargo and inserts into a shell. The shell is provided with a control circuit to actively send a warning signal as the bolt is moved. As such, the user of the electronic seal can be properly informed to prevent theft.